1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Coda File System, Linux Kernel module 4 * 5 * Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University 6 * Linux modifications (C) 1996, Peter J. Braam 7 * Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University 8 * 9 * Carnegie Mellon University encourages users of this software to 10 * contribute improvements to the Coda project. 11 */ 12 13 #ifndef _LINUX_CODA_FS 14 #define _LINUX_CODA_FS 15 16 #ifdef pr_fmt 17 #undef pr_fmt 18 #endif 19 20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 21 22 #include <linux/kernel.h> 23 #include <linux/param.h> 24 #include <linux/mm.h> 25 #include <linux/vmalloc.h> 26 #include <linux/slab.h> 27 #include <linux/wait.h> 28 #include <linux/types.h> 29 #include <linux/fs.h> 30 #include "coda_fs_i.h" 31 32 /* operations */ 33 extern const struct inode_operations coda_dir_inode_operations; 34 extern const struct inode_operations coda_file_inode_operations; 35 extern const struct inode_operations coda_ioctl_inode_operations; 36 37 extern const struct dentry_operations coda_dentry_operations; 38 39 extern const struct address_space_operations coda_file_aops; 40 extern const struct address_space_operations coda_symlink_aops; 41 42 extern const struct file_operations coda_dir_operations; 43 extern const struct file_operations coda_file_operations; 44 extern const struct file_operations coda_ioctl_operations; 45 46 /* operations shared over more than one file */ 47 int coda_open(struct inode *i, struct file *f); 48 int coda_release(struct inode *i, struct file *f); 49 int coda_permission(struct user_namespace *mnt_userns, struct inode *inode, 50 int mask); 51 int coda_revalidate_inode(struct inode *); 52 int coda_getattr(struct user_namespace *, const struct path *, struct kstat *, 53 u32, unsigned int); 54 int coda_setattr(struct user_namespace *, struct dentry *, struct iattr *); 55 56 /* this file: heloers */ 57 char *coda_f2s(struct CodaFid *f); 58 int coda_iscontrol(const char *name, size_t length); 59 60 void coda_vattr_to_iattr(struct inode *, struct coda_vattr *); 61 void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *); 62 unsigned short coda_flags_to_cflags(unsigned short); 63 64 /* inode to cnode access functions */ 65 66 static inline struct coda_inode_info *ITOC(struct inode *inode) 67 { 68 return container_of(inode, struct coda_inode_info, vfs_inode); 69 } 70 71 static __inline__ struct CodaFid *coda_i2f(struct inode *inode) 72 { 73 return &(ITOC(inode)->c_fid); 74 } 75 76 static __inline__ char *coda_i2s(struct inode *inode) 77 { 78 return coda_f2s(&(ITOC(inode)->c_fid)); 79 } 80 81 /* this will not zap the inode away */ 82 static __inline__ void coda_flag_inode(struct inode *inode, int flag) 83 { 84 struct coda_inode_info *cii = ITOC(inode); 85 86 spin_lock(&cii->c_lock); 87 cii->c_flags |= flag; 88 spin_unlock(&cii->c_lock); 89 } 90 91 #endif 92